Cisco 7000 Installation Instructions Manual page 18

Installation
Step 4
Step 5
Note
screws when attaching the spanner bars later.
Step 6
Step 7
Caution
push the brackets as far apart as possible before tightening the screws that secure them.
Step 8
To position and secure the spanner bars, proceed to the next section.
Securing the Spanner Bars
The spanner bar on each bracket hooks into the opposite bracket to maintain a fixed spacing between
the two brackets. The spanner bars prevent the brackets from separating or drifting apart, particularly
at the ends that are not secured to the rack. To connect the spanner bars, connect the hook at the
unattached end of each spanner bar to a screw at the bottom of the opposite bracket.
Follow these steps to secure the spanner bars:
Step 1
Step 2
Step 3
Step 4
18 Cisco 7000 and Cisco 7507 Rack-Mount Kit Installation Instructions
Slide the bracket up and down along the mounting post to align the mounting holes in the
bracket with those in the rack post.
While supporting the bracket with one hand, use the other hand to insert a 10-32 x 5/8-inch,
Phillips pan-head screw through the bottom mounting hole on the front of the bracket and
into the rack post. (See Figure 10.)
Finger tighten the pan-head screw, but do not tighten it because you might need to adjust these
Secure the top of the bracket to the rack with two pan-head screws. Finger tighten the
screws.
Repeat Steps 3 through 6 for the remaining bracket. Use a level or tape measure to ensure
that the two brackets are level in the rack.
To ensure adequate space between the brackets, and to ensure the chassis stays in the rack,
Measure the horizontal distance between the left and right brackets. The distance must be
greater than 17.5 inches for the chassis to clear the brackets; adjust as required.
Loosen the 10-32 x 5/8-inch, Phillips pan-head screw that is located in the end of the ledge
of the right-side bracket. (See Figure 11b.) This screw is the anchor for the spanner bar.
Remove the tape that secures the spanner bar on the left bracket, and swing the bar down
(see Figure 11a) over the anchor screw on the opposite bracket. (See Figure 11b.)
If the spanner bar does not reach the opposite bracket, loosen the pan-head screws to allow
more play between the brackets.
When the first spanner bar is secured, go around to the other side of the rack and repeat
Steps 1 through 3 to fasten the remaining spanner bar to its anchor screw. (See Figure 11c.)